Amazon RDS vs MongoDB Atlas
On the evidence we track, Amazon RDS leads this comparison with a composite score of 72/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for managed databases. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Amazon RDS
LeaderAutomates routine database tasks like provisioning, backups, and patching while supporting multiple database engines. Offers flexibility with deployment options in cloud or on-premises environments.
MongoDB Atlas
A fully managed MongoDB database service deployed on AWS, Azure, and Google Cloud. It combines flexible document storage with integrated data services including search, analytics, and real-time dashboards.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Amazon RDS
LeaderFree tier with $100 AWS credits for 12 months. Hybrid pricing: serverless billed per ACU/second, reserved instances with annual commitment, on-demand per hour. Pricing varies by region and instance type.
- AWS Free TierFree
- Aurora PostgreSQL serverless instances
- Database automation (provisioning, backup, patching)
- Aurora Serverless (On-Demand)Billed per Aurora Capacity Unit (ACU) per second based on usage
- Automatic scaling to hundreds of thousands of transactions per second
- Multi-AZ deployments
- Read replicas
- Global Database support
- All Aurora features
- Aurora Reserved InstancesAnnual commitment with amortized hourly pricing
- 1-year commitment term
- Designated to specific AWS Region and instance type
- Billed for every hour of term regardless of running status
MongoDB Atlas
Free tier available. Flex clusters with usage-based pricing. Dedicated clusters starting at $56.94/month.
- M0 (Free)Free
- Shared vCPU
- Replica set deployment
- Non-critical workloads
- Flex ClusterUp to $30/month based on usage
- Dedicated ClusterStarts at $56.94/month
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- AWS CloudFormation
Amazon RDS
Leader- Amazon Aurora
- Amazon EC2
- Amazon EBS
- AWS CloudWatch
- AWS Config
- Amazon S3
- AWS IAM
- AWS Outposts
- AWS Graviton3
- Amazon QuickSight
- Amazon Redshift
- AWS Artifact
- Amazon GuardDuty
- AWS Audit Manager
- Amazon CloudWatch
- AWS Database Migration Service
MongoDB Atlas
- AWS S3
- Terraform
- Kubernetes
- Docker
- MongoDB Shell
- Atlas CLI
- Node.js MongoDB Driver
- Python MongoDB Driver
- C# EF Core Provider
- Azure
- Google Cloud
Amazon RDS or MongoDB Atlas: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.